Personally, I'm not in favor of the Ellison, however this reminds me of the debate over the EWP. There was absolutely NO WAY that it would provide enough flow to cool the engine. Now we all know that isn't true (except PL :-).
I don't remember correctly, but was Ken's advise to not use the Ellison based on actual use? If so then maybe that provides the proof needed and no further speculation is necessary, but if it was based on theoretical analysis, then what we need to do is have someone with their engine on a test bed install one with an acceptable manifold and prove it one way or the other.
I feel that even if it does work, economically it is not a viable solution, but while most theory tells us it won't work, we should attempt to prove it. Since there appears to be at least one already available, lets have a volunteer with an engine :-)
Todd Bartrim